3 years ago

Five workers dig a trench 5 yards long in 5 hours. How many workers are needed to dig a 100 yards long in 100 hours?

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

7 0

I think it would require 100 workers since 1 worker digs up 1 yard.

Hope this helps.

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Dave's Doughnuts sells a dozen doughnuts for $5.40. What is the unit cost per doughnut?

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Answer: The cost per donut is 0.45

Step-by-step explanation: A dozen donuts is 12 donuts. $5.40 dollars divided by 12 is 0.45.

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3 years ago

25. Write the elements of the given set A A= { x|x is a square number less than 5}

eimsori [14]

Answer:

A = (1, 4)

Step-by-step explanation:

Given :

Square numbers include : 1², 2², 3², 4²,...

x|x square numbers less than 5

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3² = 9 (not applicable)

Square numbers less than 5 are ; 1, 4

Hence,

Set A = (1, 4) where, x|x square numbers less than 5

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Answer:

The angle: $70\°$

The supplement: $110\°$

Step-by-step explanation:

By definition, if the sum of two angles is 180 degrees, then this angles are called "Supplementary Angles".

Let be:

$x$ the angle (in degrees) and $2x-30$ its suppplement (in degrees).

Therefore, you can write the following equation in order to find the angle and its supplement:

$x+2x-30=180$

Now, you must solve for "x". Then:

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Then:

$2x-30=2(70)-30=140-30=110$

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